Facing or cutting tool



Oct. 2 1923. 1,469,279

c. F. SNYDER FACING 0R CUTTING TOOL Filed May 24. 1920 WITNESSES g yawwFatented Get." 2, 1923.

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FACING OR CUTTING TOOL.

Application filed May 24,1920. Serial nessaesr. 7

To all 2/; 710m it may concern I 1 Be it known that 1, CHARLES l SNYDER,a (Ill/123G31 of the United States, residing at Pittsburgh, in thecounty of Allegheny and State-oi Pennsylvania, have inventedcertain newand useful Improvements in Facing or Cutting Tools, of which thefollowmg is a specification.

My invention relates to atacing or cutting tool, and more especially toa tool of the character described, particularly adapted for forming agranulated contacting face or surface on one or more metallic members,such members, for example, being employed in a joint structure.

A joint structure of the character specified, i. e., a structureincluding one or more granular contacting faces or surfaces, andthemethod of making the same, is described andlclaimed in a companionapplication filed by me June 14, 1919, Serial No. 304,178, new issued asPatent N 1,348,661 of August 3, 1920.

The prime object of the present invention is to provide, a simpleandetlicient tool for forming a granular surface on a metallic member orpart. A tool of a character capable of being employed as a hand cuttingor facing tool, but preferably designed to be employed in connectionwith apparatus designed for holding the tool in oper ative position andrevolving the article to .be treated while maintained in contact withthe tool, or moving the tool over a. surface of a fixed article, suchapparatus "for, example, as lathes, boring mills, and drill presses.

My invention also contemplates using the tool with electric and;pneumatic drill apparatus and pneumatic hammer construc tions.

In the accompanying drawings which illustrate an application of myinvention,

Fig. 1 is a front elevational view of a tool embodying my invention;

Fig. 2,an elevational view showing a plurality of cutting disks ormembers and clamp plates spaced apart;

Fig. 3, a vertical sectional View showing the elements of Fig. 2assembled and so cured together;

Fig. 4-, a perspective view of a cutting disk or member;

Fig. 5, a front'edge view;

Fig. 6, a side view; 7

Fig. 7, a face view of an article formed of a tool embodying myinvention.

Referring to the drawings,- and first to the form of Fig. l,lnyimprovcdcutting or facing tool designed tortorminga granular withagranular surface b the employment '52 surrace on a lflQLZllllC' member,includes a plurality of similar disks 2; these disks are bent orotherwise shaped to provide each disk with va waved periphery. I Theperiphery or edge of each disk is formed with similar cutting teeth orelements 13, and in aIddition thereto, each disk is formed with acentralopening a and a plurality of smaller openings 5;

. 66 designate clamp members between central opening 4 ota disk,a'ndwith open ings 8 corresponding to and adapted. to aline with theopenings 5. The diameters of the clamp members 6 are slightly less thanthe diameters of the men'i-bcrs ordisks 2. therewhich the disks are heldwhenassembled,

by. permitting the cutting edges. to project outwardly from the clampswhen theparts are assembled. o Y

- The disks and clanipzmember's are scjcured together by means of beadedpins 9 passed throughthe alined openings 5 and 8 of the respectivemembers, said members bc' ing shown assembled and bound together in Fi3.

5 above pointed out, my tool for forming a granular surface on ametallicmember or partmay be employed in connection with variousapparatus and different forms of tool holders. In Fig. 1, I have shown asimple and eilicient holder adapted to receive the tool and capable ofbeing used in conjunction with, for example, a' lathe. As shown, thetool holder includes a shank portion. 10 and two spaced apart aws 11,the latter-being designed to have the tool disposed between them andloosely mounted on a non10tative shaft 12.

Considerable care must be exercised in making and assembling the disksin order toobtain good results in the operation of a forming thegranular surface or surfaces, such for instance, as the surface or face13 on the part or member 14-. I

v Thecutting disks may, of course, be made of different diameters,depending upon the character, size, etc. of the surface or part .llt)

to be granulated, and the thickness of the metal from which the disksare made may be varied.

I have found. after numerous experiments, that-a disk having a diameterof about one and a half inches and a thickness of .715 inch is averydesirable size. The formation of the cutting edges may be effected bythe employment of a sixty degree cutter operating to cut on an angle offortyfive degrees andto a dept-h of .037 of an inch, after which theedges bevelled to an included angle ofsixty-six degrees.

Afterthe peripheries are formed as de-' edges, the edges being sinuouslycurved With the curved tin Jarts of adj acent disks inter-fitcutter forforminga granulated surface on metallic articles comprising a pluralityof disks having sinuously curved edges; the curved parts of adjacentdisks interfitting and contacting with one another.

3. A cutter for forming a granulated surfrce on metallicarticles'comprising a plurality of disks having serrated peripheraledges, the. serrations being relatively small and close together,several serrations being formed in each complete sinuous curve, the

curved parts of the adjacent disks 'interfitting and contacting, theserrations or the disks thus overlapping one another.

4-. A cutter for forming a granulated surface on metallic articleshavinga sinuous V periphery in which are a plurality of sharp pointed teeth.

5. A cutter for forming a granular-like surface on a metallic membercomprising a plurality of disks, rotatably supported and held togetherto rotate in unison, said disks contacting With'eaclr other throughoutthe greater portion of their surface, said disks being bent in aWave-like manner whereby-a sinuous peripheral edgeis formed oneaeh disk,sa1d edges having pointed teeth formed cle to be treated; I

6. A tool for forming a. granularhke surtherein for digging in thesurface of an artiface on a metallic member comprising a' rotatablemember having aplurality of an nular sinuous rows .O'fPO'lZlllQtl teethon the periphery thereof, said teeth in adjacentv rows being out of truetransverse alinement With the teeth in ad acent rows.

7. A cutter element for forming a granulated appearing surface onmetallic articles comprising a disk ofmetal havinga sinuous peripherywhich is beveled, said sinuous beveled periphery having small cut-tingmeans formed therein for digging into the Surface of an article to betreated.

In testimony whereof Iaflix my'signature in presence of two Witnesses. e7

CHARLES FRENCH SNYDER.

Witnesses:

J. M. GnocnEeA-N, Lois XNINEMAN.

